Vizzion just let me know that their commercial BlackBerry application is out of beta. It essentially lets you watch screenshots of traffic cameras in North America, Ireland, New Zealand, and the UK. They have over 7,500 cameras in 150+ major cities. The application is not free but does have a reasonable $29/year or $5/month subscription.
Traffic Vizzion supposedly lets you see the cameras on a map or will work using the GPS built into your BlackBerry. I have not had a chance to try it myself but the idea is pretty cool. They claim that the GPS can track your location and update you on the traffic situation while you drive.
They do have a free two-week trial available at: www.vizzion.com if you are interested. If you do try it out let us know what you think!